Finding the Fourth Proportional to 42,138.64, 58,150.82 and 23,018.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,138.64 : 58,150.82 = 23,018.18 : x
2. Step 2: Convert to fraction form
   42,138.64/58,150.82 = 23,018.18/x
3. Step 3: Cross multiply
   42,138.64x = 58,150.82 × 23,018.18
4. Step 4: Simplify right side
   42,138.64x = 1,338,526,041.91
5. Step 5: Solve for x
   x = 1,338,526,041.91/42,138.64
6. Step 6: Final answer
   x = 31,764.81